243121245044 has 12 divisors (see below), whose sum is σ = 425746020000. Its totient is φ = 121479525048.

The previous prime is 243121245013. The next prime is 243121245047. The reversal of 243121245044 is 440542121342.

It is a self number, because there is not a number n which added to its sum of digits gives 243121245044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121245047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20267624 + ... + 20279615.

It is an arithmetic number, because the mean of its divisors is an integer number (35478835000).

Almost surely, 2^243121245044 is an apocalyptic number.

It is an amenable number.

243121245044 is a deficient number, since it is larger than the sum of its proper divisors (182624774956).

243121245044 is a wasteful number, since it uses less digits than its factorization.

243121245044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40548742 (or 40548740 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 243121245044 its reverse (440542121342), we get a palindrome (683663366386).

The spelling of 243121245044 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, forty-four".